Multiplier mechanism.



G. PORTIER.

MULTIPLIER MECHANISM.

APPLICATION FILED 11116.23, 1913.

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, Afforney,

G. FORT'IER.

MULTIPLIER MECHANISM.

APPLICATION TILED AUG. 23, 1913.

1,092,904. Patented Apr. 14, 1914.

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G. FORTIBR.

MULTIPLIER MECHANISM.

APPLIOATION FILED AUG.23, 1913.

1,092,904. Patented Apr. 14, 1914.

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Aiiown ey.

GEORGE FOBTIER, OF WARREN, RHODE ISLAND, ASSIGNOR OF ONE-HALF TO JOSEPH .G'EOFFBOY, OF WARREN, RHODE ISLAND.

IVIULTIPLIER MECHANISM.

Specification of Letters Patent. Patgnted & 14 191% Application filed August 23, 1913. Serial No. 786,212.

porary suspension of certain picks; and the attainment of these results automatically, and by means of mechanism of simple and inexpensive construction.

To the above end primarily my invention consists in such parts and in such combination of parts as fall within the scope of appended claims.

In the accompanying drawings which form a part of this specification Figures 1, 2 and 3 are side, plan, and end elevations respectively of a loom shedding mechanism .in which is incorporated my novel multiplier mechanism, Fig. 4, a front elevation of the pattern wheel controlling device, Fig. 5, a section taken on line was of Fig. 2, Fig. 6, an enlarged side elevation of a port-ion of the shedding mechanism showing in front elevation the multiplier mechanism. Fig. 7, a section of the same on line g y of Fig. 6, and Fig. 8, a rear elevation of the shedding mechanism showing in broken outlines the hook disengaged.

Like reference characters indicate like characters throughout the views.

My multiplier mechanism is adapted to he used in conjunction with any shedding mechanism for looms and in the present instance is illustrated in conjunction with the shedding mechanism set forth in my prior Patent, No. 1,024,846, dated April 30, 1912. Only such parts of the shedding mechanism are herein shown as assist in the disclosure of the effects of the multiplier mechanism.

In the drawings 4 is the shedding mechanism frame, in which is journaled the shaft 5 carrying the gears 7 and 8, driven by the toothed bar 10.

12 and 13 are the bar racks driven by the gear 7 and 15 and 16, the gear racks driven by gear 8; 18 and 19 are the transverse knives connecting the racks 12 and 15, and

'13 and 16 respectively; 20 is the cam carried by rack 15.

22 are the series of slides carrying the i draw rods 23 to which are attached the suspension cords 24.

26 and 27 are the fingers pivotally connected to the upper and lower ends of the slides, and carrying the intermediate notched lugs 29 and 30, and the forward books 33 and 34 respectively, the former being adapted for intermittent engagement with the reciprocating knives 18 and 19, and having double notches in order to effect their successive engagement and disengagement with their respective hook bars hereinafter referred to. Upon the bar 36, fixed near the front of the frame, are loosely mounted at intermediate portions the upper and lower feelers 37 and 38 alternately arranged, and having their heavier forward portions normally resting upon a cross bar 39 in the forward lower end of the frame. The elevated nose 40 of the feeler 37 normally supports the finger 26, and the horizontal nose 41 of the feeler 38 supports the finger 27.

43 and 44 are the upper and lower hook bars carried by their respective pivoted hook bar rames 45 and 46, and adapted to temporarily engage the books 33 and 34 respectively after the latter have been advanced. 48 is the resilient cam finger on the hook bar 43 in the path of the cam 20; and 50 finger on the bar 44 in the path of cam 51 on rack 16.

The chain shaft 53 mounted in the brackets 54 of the frame carries the star wheel 55; and 57 is the cam rod, and 58 the cam engaged therewith by the spring 60. This device centers the pin rows of the pattern chain 62, carrying preferably double rows of pins 64 on the pattern bars 65 adapted to selec tively elevate the forward portions of feelers 37, 38' and lower the rear or operating ends of the feelers which support the draw bar fingers. On the shaft 53 is fixed the wheel 66 with ratchet teeth 67. r

The operation of the above described familiar parts of a shedding mechanism involves the opposite reciprocation of the pairs of gear racks and their knives 18, 19 through the gears 7, 8. and the vertically reciprocating bar 10 driven through any preferred mechanism by the crank shaft or other operating shaft of the loom. The draw rods 23 under the rearward tension of the cords 24 tit) leading to the heddles are primarily advanced by the engagement of the knives with the notched lugs on the fingers 26, 27 the fingers being selectively elevated into the paths of the knives by the feelers.

Referring now to the mechanism more intimately concerned with the multiplier feature, there is fixed to the gear rack 16, by a bolt and slot connection 68, a block 71 provided with a stud 7 2 sliding in an oblong slot 73 in a lever 74 pivoted intermediate its length on a stud '75 in a depending portion 76 of the frame 4. A slidable plate 78 is pivoted at one end to a stud 79 on the lever 74, and is provided at its opposite end with a longitudinal marginal guide slot 80 to receive loosely the shaft 53. Loose on the shaft 53, behind the plate 78, is a ratchet 82 and a sprocket wheel 84, the ratchet and sprocket being integral or united in any convenient manner. A sprocket chain 86 or other flexible member on the wheel 84 engages a sprocket wheel 87 on a shaft 88 slidable in an inclined guide 90 upon the frame. Fixed to the chain 86 is a lug 91.

The sprocket wheel 87, located in the guide 90, is by Virture of the latter adapted to tension thechain 86. This, however, is not essential, and the latter sprocket wheel and guide may be dispensed with without departing from the spirit of my invention. Pivoted upon a pin 93 upon the plate 78 is a gravity lever 94, having upon one end a hook 95 engaging the toothed wheel 67. The lever has upon its end opposite the hook a block or weighted portion 98 laterally extending as at 99, and attached to this or integral therewith is a depending beak 99 located in the path of the chain lug 91. Upon the slide 7 8 is also a pin 101 located in substantially horizontal alinement with pin 93, and upon this is pivotally mounted intermediate its length a gravity lever 102 having upon its forward end a beveled portion or tooth 103, and upon its other end a weight or enlarged portion 104. The portion 103 of this lever is held in contact with the portion 98 of the lever 94 by the weight 104, and when the portion 98 is in its lowest position, asshown in Fig. 8, the port-ion 103 of the second lever is depressed into such a horizontal plane as to bring it into contact with the teeth of the wheel 82 when the plate 78 is advanced. The weight 104 elevates the portion 103 out of the plane of the teeth of wheel 82 whenever the portion 98 of the lever 94 is elevated. In order to prevent back lash there may be, if desired, a depending pawl 109 mounted on the rod 36 or otherwise, and resting upon the teeth of the ratchet wheel 82. This, however, may be omitted if desired. Upon one of the feelers 38, near its forward end, is a laterally extending arm portion 111 provided with an upwardly inclined end angular portion 114 adapted to cooperate with the hooked end of the lever 94. hen the feeler is in low position its portion 114 is in such a horizontal plane that when the plate 78 advances, the rounded forward end of the lever 94 strikes it, and the hook 95 is thereby guided downwardly into engagement with a tooth 67, and the retreat of the plate 78 rotates the shaft 53 to elevate the chain 62 the distance of a pattern bar. So long as the member 114 remains in its described depressed position each reciprocation of the plate 78 advances the wheel 66 a notch and elevates a pattern bar, and the chain 86 does not move, the parts being in the position shown in Fig. 6. lVhen, however, a pin 64 on one of the cross-pieces in its advance contacts with and elevates the feeler, the portion 114 rises and releases the hook 95 so that the latter, under the influence of weight 98, rises out of the path of the teeth 67, as shown in brokenlines in Fig. 8; and the tooth 103 is depressed by weight 98 to operate upon the ratchet 82 which moves the chain 86 link by link until the member 91 again trips the member 99. If at the time of contact of the member 91 with member 99 the member 114 is being held in elevation by a pin the hook 95 remains in engagement with the wheel 66 only long enough to operate the latter the distance of a tooth, and then resumes inoperative position.

It will be seen that the pattern chain 62, which directly controls the heddles, is by my novel mechanism automatically controlled so as to be thrown out of operation for intervals while the weaving intermediate the patterns is taking place, thus lessening the required number of pattern bars, and deminishing the wear on the mechanism.

It will be understood that the invention is not to be limited by the specific showing herein except for such limitations as the claims impart. The multiplier mechanism herein shown is obviously applicable to any of the usual well known shedding mechanisms in use, and is embodied in the present instance in applicants shedding mechanism merely for illustrative purposes.

WVhat I claim is V 1. The combination with the feelers, pattern chain, chain shaft, and toothed wheel of a shedding mechanism, of a reciprocating plate adjacent the wheel, means for reciprocating the plate, a ratchet loose on the shaft, a. sprocket wheel loose on the shaft and fast to the ratchet, a sprocket chain on the sprocket wheel, a lug on. the chain, a gravity lever pivotally mounted upon the plate, a hook upon the lever adapted toengage the toothed wheel, a beak upon the lever in the path of the lug, and an arm upon one of the feelers adjacent the wheel in the path of the hook.

2. The combination with the feelers, pattern chain, chain shaft, and toothed wheel of a shedding mechanism, of a reciprocating plate adjacent the wheel, means for reciprocating the plate, a ratchet loose on the shaft, a sprocket wheel loose on the shaft and fast to the ratchet, a sprocket chain on the sprocket wheel, a lug on the chain, a gravity lever adapted to engage the toothed wheel, a beak upon the lever in the path of the lug, a. second gravity lever pivotally mounted upon the plate in contact with the first lever and movable into and out of the plane of the ratchet by the first lever, and an arm upon one of the feelers adjacent the wheel in the path of the lever.

3. The combination with the feelers, pattern chain, chain shaft, and toothed wheel of a shedding mechanism, of a reciprocating plate adjacent the wheel, means for reciprocating the plate, a ratchet loose on the shaft, a sprocket wheel loose on the shaft and fast to the ratchet, a sprocket chain on the sprocket wheel, a lug on the chain, a lever pivotally mounted upon the plate, a hook upon the lever adapted to engage the toothed wheel, and movable by the lug, a second lever pivotally mounted upon the plate movable by the first lever and adapted to engage the ratchet, and an arm upon one of the feelers adapted to contact with the first lever and engage said lever with the toothed wheel when the plate reciprocates.

4. The combination with the feelers, pattern chain, chain shaft, and toothed wheel of a shedding mechanism, of a reciprocating plate adjacent the wheel, means for reciprocating the plate, and ratchet loose on the shaft, asprocket loose on the shaft and fast to the ratchet, a sprocket chain upon the sprocket wheel, a lug on the chain, a gravity lever pivotally mounted upon the plate,

a hook upon the forward end of the lever adapted to engage the toothed wheel, and a weight upon the rear end of the lever, a beak upon the weight in the path of the lug, a second lever pivotally mounted intermediate its length upon the plate, a toot-h upon the forward end of the second lever in contact with the lower portion of the weight and in alinement with the ratchet, a weight upon the rear end of the second lever, and an inclined arm upon one of the feelers adjacent the wheel and movable into the path of the hook.

5. The combination with the frame, feelers, pattern chain, chain shaft, wheel, and rack of a shedding mechanism, and means for reciprocating the rack, of a block upon the rack, a lever pivotally mounted intermediate its length upon the frame and pro vided with a longitudinal slot, a pin upon the block registering in the slot, a plate pivotally connected with the'lever and provided with a longitudinal opening to receive the chain shaft, a ratchet loose on the shaft adjacent the plate, a sprocket wheel loose on the shaft and fast to the ratchet, a sprocket chain on the sprocket wheel, a lug on the chain, an arm upon one of the feelers extending adjacent the wheel, a gravity lever pivotally mounted upon the plate in the path of the arm and engageable with the wheel and in the path of the lug, and a second gravity lever pivotally mounted upon the plate and movable by the first gravity lever into the plane of the ratchet.

In testimony whereof I affix my signature in presence of two witnesses.

GEORGE FORTIER.

Witnesses CLIFFORD S. Townn, HORATIO E. BELLOWS.

maples of this patent my be obtained for five cents each, by addressing the Commlmsloner of Patents, Washington, .D. G. 

